package com.javaapi.string;

import java.io.ObjectInputStream.GetField;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.zip.Inflater;

public class MediaFile {

	public static String sFileExtensions;

	// Audio file types
	public static final int FILE_TYPE_MP3 = 1;
	public static final int FILE_TYPE_M4A = 2;
	public static final int FILE_TYPE_WAV = 3;
	public static final int FILE_TYPE_AMR = 4;
	public static final int FILE_TYPE_AWB = 5;
	public static final int FILE_TYPE_WMA = 6;
	public static final int FILE_TYPE_OGG = 7;
	private static final int FIRST_AUDIO_FILE_TYPE = FILE_TYPE_MP3;
	private static final int LAST_AUDIO_FILE_TYPE = FILE_TYPE_OGG;

	// MIDI file types
	public static final int FILE_TYPE_MID = 11;
	public static final int FILE_TYPE_SMF = 12;
	public static final int FILE_TYPE_IMY = 13;
	private static final int FIRST_MIDI_FILE_TYPE = FILE_TYPE_MID;
	private static final int LAST_MIDI_FILE_TYPE = FILE_TYPE_IMY;

	// Video file types
	public static final int FILE_TYPE_MP4 = 21;
	public static final int FILE_TYPE_M4V = 22;
	public static final int FILE_TYPE_3GPP = 23;
	public static final int FILE_TYPE_3GPP2 = 24;
	public static final int FILE_TYPE_WMV = 25;
	private static final int FIRST_VIDEO_FILE_TYPE = FILE_TYPE_MP4;
	private static final int LAST_VIDEO_FILE_TYPE = FILE_TYPE_WMV;

	// Image file types
	public static final int FILE_TYPE_JPEG = 31;
	public static final int FILE_TYPE_GIF = 32;
	public static final int FILE_TYPE_PNG = 33;
	public static final int FILE_TYPE_BMP = 34;
	public static final int FILE_TYPE_WBMP = 35;
	private static final int FIRST_IMAGE_FILE_TYPE = FILE_TYPE_JPEG;
	private static final int LAST_IMAGE_FILE_TYPE = FILE_TYPE_WBMP;

	// Playlist file types
	public static final int FILE_TYPE_M3U = 41;
	public static final int FILE_TYPE_PLS = 42;
	public static final int FILE_TYPE_WPL = 43;
	private static final int FIRST_PLAYLIST_FILE_TYPE = FILE_TYPE_M3U;
	private static final int LAST_PLAYLIST_FILE_TYPE = FILE_TYPE_WPL;

	static class MediaFileType {
		int fileType;
		String mineType;

		public MediaFileType(int fileType, String mineType) {
			super();
			this.fileType = fileType;
			this.mineType = mineType;
		}

		private static Map<String, MediaFileType> mFileTypeMap = new HashMap<String, MediaFile.MediaFileType>();
		private static Map<String, Integer> mMimeTypeMap = new HashMap<String, Integer>();

		static void addFileType(String extension, int fileType, String mineType) {
			mFileTypeMap.put(extension, new MediaFileType(fileType, mineType));
			mMimeTypeMap.put(mineType, new Integer(fileType));
		}

		static {

			addFileType("MP3", FILE_TYPE_MP3, "audio/mpeg");
			addFileType("M4A", FILE_TYPE_M4A, "audio/mp4");
			addFileType("WAV", FILE_TYPE_WAV, "audio/x-wav");
			addFileType("AMR", FILE_TYPE_AMR, "audio/amr");
			addFileType("AWB", FILE_TYPE_AWB, "audio/amr-wb");
			addFileType("WMA", FILE_TYPE_WMA, "audio/x-ms-wma");
			addFileType("OGG", FILE_TYPE_OGG, "application/ogg");

			addFileType("MID", FILE_TYPE_MID, "audio/midi");
			addFileType("XMF", FILE_TYPE_MID, "audio/midi");
			addFileType("RTTTL", FILE_TYPE_MID, "audio/midi");
			addFileType("SMF", FILE_TYPE_SMF, "audio/sp-midi");
			addFileType("IMY", FILE_TYPE_IMY, "audio/imelody");

			addFileType("MP4", FILE_TYPE_MP4, "video/mp4");
			addFileType("M4V", FILE_TYPE_M4V, "video/mp4");
			addFileType("3GP", FILE_TYPE_3GPP, "video/3gpp");
			addFileType("3GPP", FILE_TYPE_3GPP, "video/3gpp");
			addFileType("3G2", FILE_TYPE_3GPP2, "video/3gpp2");
			addFileType("3GPP2", FILE_TYPE_3GPP2, "video/3gpp2");
			addFileType("WMV", FILE_TYPE_WMV, "video/x-ms-wmv");

			addFileType("JPG", FILE_TYPE_JPEG, "image/jpeg");
			addFileType("JPEG", FILE_TYPE_JPEG, "image/jpeg");
			addFileType("GIF", FILE_TYPE_GIF, "image/gif");
			addFileType("PNG", FILE_TYPE_PNG, "image/png");
			addFileType("BMP", FILE_TYPE_BMP, "image/x-ms-bmp");
			addFileType("WBMP", FILE_TYPE_WBMP, "image/vnd.wap.wbmp");

			addFileType("M3U", FILE_TYPE_M3U, "audio/x-mpegurl");
			addFileType("PLS", FILE_TYPE_PLS, "audio/x-scpls");
			addFileType("WPL", FILE_TYPE_WPL, "application/vnd.ms-wpl");

			StringBuffer sb = new StringBuffer();
			Iterator<String> iterator = mFileTypeMap.keySet().iterator();

			while (iterator.hasNext()) {
				String temp = (String) iterator.next();
				if (sb.length() > 0) {
					sb.append(",");
				}
				sb.append(temp);
			}
			sFileExtensions = sb.toString();
		}

		public static MediaFileType getMediaFile(String filePath) {
			int indext = filePath.lastIndexOf(".");
			if (indext < 0) {
				return null;
			}
			return mFileTypeMap.get(filePath.substring(indext + 1).toUpperCase());
		}

		public static boolean isAudioFile(String filePath) {
			MediaFileType type = getMediaFile(filePath);
			
			if (type!=null) {
				return isAudioFileType(type.fileType);
			}
			return false;
			
		}
		
		// 根据mime类型查看文件类型
		public static int getFileTypeForMimeType(String mimeType) {
			Integer value = mMimeTypeMap.get(mimeType);
			return (value == null ? 0 : value.intValue());
		}
		
		
		public static final String UNKNOWN_STRING = "<unknown>";

		public static boolean isAudioFileType(int fileType) {
			return ((fileType >= FIRST_AUDIO_FILE_TYPE && fileType <= LAST_AUDIO_FILE_TYPE) || (fileType >= FIRST_MIDI_FILE_TYPE && fileType <= LAST_MIDI_FILE_TYPE));
		}

		public static boolean isVideoFileType(int fileType) {
			return (fileType >= FIRST_VIDEO_FILE_TYPE && fileType <= LAST_VIDEO_FILE_TYPE);
		}

		public static boolean isImageFileType(int fileType) {
			return (fileType >= FIRST_IMAGE_FILE_TYPE && fileType <= LAST_IMAGE_FILE_TYPE);
		}

		public static boolean isPlayListFileType(int fileType) {
			return (fileType >= FIRST_PLAYLIST_FILE_TYPE && fileType <= LAST_PLAYLIST_FILE_TYPE);
		}

	}
}
